Re: Friends empty after BuddyPress reinstall, but number of friends still shows
friend count is stored in the wp_usermeta table ‘total_friend_count’ so you may need to manually reset those
there is a function friends_get_total_friend_count( $user_id = false ) { – maybe a quick loop over your user_id(s) to update the wp_usermeta table. Unless something already exists for a better recount (maybe a plugin idea) – for which i’ll wait for @r-a-y to correct me on 
